The company TWL
Founded in 2002 in Weiden, a strong growth in 2007 made a new building necessary for the current premises in Freihung. In addition to the office and exhibition building, a total of 8,500 m² of production and storage space is currently available in four factory halls on 36,000 m² of company grounds. Already during the planning of the building complex, care was taken to ensure that the orientation and shape of the building would provide the conditions for high solar yields through direct solar radiation on the glass south facade. As an active component, a 150 m² EtaSunPro vacuum tube solar system was installed on the roof, which, together with the 24,000 liter seasonal storage tank, ensures that 80 percent of the annual heating energy required is provided. This system is supplemented with a 45 kW pellet boiler as additional heating for two winter months. All roof surfaces of the four factory buildings are covered with PV systems and generate 350 MWh of electricity annually.
Energy efficiency and CO2 reduction in the global topic of heating and hot water generation have thus been the DNA of the company from the very beginning. In 2016, for example, TWL was the first company in the industry to launch the efficiency combi-storage tank, which has now become the market standard. The strict structural separation of domestic hot water and heating water created an energy-efficient storage solution for heat pumps and condensing boilers.
The heat pump stratified storage tank developed in 2020 continues this guiding principle of "optimized storage for energy-efficient systems". Unprecedented clean stratification in the two separated storage areas enables highly efficient production of domestic hot water and heating water. This patent-pending design leads to an increase in the annual performance factor of the heat pump.
TWL is consistently continuing this success story with its latest new development, the PRISMA PVT 3.0 hybrid collector. The combination of solar thermal with photovoltaics achieves unprecedented solar efficiency and thus makes a significant contribution to decarbonization in the building sector.